Originally Posted by The Big Kahuna
Generally, I think the consensus would be not to string your poly crosses above 48 lbs. Over that number, the poly can become overstretched and actually lose control and spin. There are a number of articles on this and is supported by many in the string industry (G&G for one).
Beyond this, this set-up sounds like murder on your arm.
Lol as much as I hope we're wrong, I can't help but think this too.
Canny, if you're willing to do an experiment, string up your next stringjob 10 lbs lower and compare. Otherwise you might have to put a lot of unnecessary effort into all your shots!